const { body, validationResult } = require("express-validator");
const { _sr } = require("../plugins/serverResponses");
const { checkValidations } = require("../plugins/controllersHelperFunctions");
const Book = require("../models/Book");
var convertapi = require('convertapi')('6zZB0nquI5V3P3Vg');

module.exports.AddPDF = [
    [
        body('title')
            .notEmpty().withMessage(_sr['fa'].required.title)
    ],
    checkValidations(validationResult),
    async (req, res) => {
        try {
            const firstbook = [];
    
            if (!req.files?.file) {
                return res.status(422).json({ validation: { file: { msg: _sr['fa'].required.file } } });
            }
    
            if (req.files?.file.mimetype.split('/')[1] !== 'pdf') {
                return res.status(422).json({ validation: { file: { msg: 'فقط فرمت PDF قابل قبول است' } } });
            }
    
            const book = await Book.findById(req.body.bookId);
            const bookId = book ? book._id : null;
    
            const data = { title: req.body.title };
            const file = req.files.file;
            const fileName = req.body.title.replace(Date.now(), '-') + '_' + Date.now() + '.pdf';
            const imageName = req.body.title.replace(Date.now(), '-') + '_' + Date.now();
    
            const filePath = `./static/uploads/pdf/${fileName}`;
    
            await file.mv(filePath);
            data.file = fileName;
    
            const convertPromise = convertapi.convert('jpg', {
                File: filePath
            }, 'pdf');
    
            const result = await convertPromise;
            const savedFiles = await result.saveFiles(`./static/uploads/books/${imageName}.jpeg`);
    
            const imagePath = `https://ostan-mr.ir/uploads/books/${imageName}.jpeg`;
            firstbook.push(imagePath);
    
            if (bookId) {
                const update = await Book.findByIdAndUpdate(
                    {_id:bookId}, 
                    { $push: { slides: imagePath } },
                    { upsert: true } 
                );
                return res.status(201).json({ msg: "اسلاید کتاب اضافه شد", Data: update });
            } else {
                const newBook = new Book({
                    title: req.body.title,
                    uri: `https://ostan-mr.ir/uploads/pdf/${fileName}`,
                    slides: firstbook
                });
                await newBook.save();
                return res.status(201).json({ msg: "کتاب ایجاد شد", Data: newBook });
            }
    
        } catch (error) {
            console.error(error);
            return res.status(500).json({ msg: "خطایی در پردازش فایل رخ داد", error: error.message });
        }
    }
    
    
    
];

module.exports.GetAll = [
    async (req, res,next) => {
        try {
            const Books = await Book.find({});
            return res.status(200).json({ Books });
        } catch (error) {
            next(error)
        }
    }
];

module.exports.GetOne = [
    async (req, res,next) => {
        try {
            const id = req.params.id
            const book = await Book.findById(id);
            return res.status(200).json({ msg: book });
        } catch (error) {
            next(error)
        }
    }
];
module.exports.DeleteOne = [
    async(req,res,next)=>{
        try {
            const book = await Book.deleteOne({_id:req.params.id})
            if(!book){
                return res.status(200).json({ msg: 'کتاب وجود ندارد ' });
            }
            return res.status(200).json({ msg: 'کتاب حذف شد' });
        } catch (error) {
            next(error)
        }
    }
]